
    body{
   background: #929292 ；
    }
    @keyframes spin{
    from{
      transform: rotate(0deg);
    }  
    to{
      transform: rotate(360deg);
    }
    
    }
    #location{
      position: absolute;
      top: 50%;
      left:50%;
    }
    #yin-yang {
      width: 96px;
      box-sizing: content-box;
      height: 48px;
      background: #ffffff;
      border-color: black;
      border-style: solid;
      border-width: 2px 2px 50px 2px;
      border-radius: 100%;
      position: relative;
      animation-duration: 3s;
      animation-name: spin;
      animation-iteration-count: infinite;
      animation-timing-function: linear;
    }
    #yin-yang:before {
      content: "";
      position: absolute;
      top: 50%;
      left: 0;
      background: #FFF;
      border: 18px solid black;
      border-radius: 100%;
      width: 12px;
      height: 12px;
      box-sizing: content-box;
    }
    #yin-yang:after {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      background: black;
      border: 18px solid #FFF;
      border-radius: 100%;
      width: 12px;
      height: 12px;
      box-sizing: content-box;
    }
  